Shock Plus 5-Pack Aqua Chem Shock Plus is an all-in-one shock that kills organic contaminates&#44; improves filtration&#44; There"s no need to pre-dissolve and swimming can be resumed as soon as 15 minutes after adding Shock Plus reduces chlorine odor and eye irritation&#44; and will not increase pH For use in all pools including vinyl&#44; plaster and fiberglass Reduces organic contaminants&#44; clarifies water and enhances filtration